Machine for forming enlarged or extended heads upon nails and the like.



J. B. DAVIES & H. BELL. I MACHINE FOR FORMING ENLARGED 0R EXTENDED HEADSUPON NAILS AND THE LIKE.

APPLICATION FILED JULY 10, 1908.

Patented Apr. 1910.

6 SHEETS-SHEET l.

A TTORN E Y8.

WITNESSES ANDREW a. GRAHAM 60.. PNOTD-LITNDGRAPHERS WASHINGTON, ac.

J. B. DAVIES-8v H. BELL.

MADEI E FOR FORMING ENLARGED 0E EXTENDED HEADS UPON NAILS AND THE LIKE.

I APPLICATION FILED JULY 10, 1908. 955,635.

6 SHEETS-SHEET 2.

Patented Apr. 19, 1910.

r ya zzrg/ENTO WITNESSES A TTOME Ys.

J. B. DAVIES & H. BELL. A MACHINE FOR FORMING ENLARGED 0E EXTENDED HEADsUPON NAILS AND THE LIKE.

' I APPLICATION FILED JULY 10, 1908.

955,6 35. Patented Apr. 19, 1910. f I e sums-sum s'.

1&3 H

WITNESSES Q Q cf may a GRAHAM co PHQI'U-LITHOGRAPNERS. WASHING'ON. n, c

J. BJDAVIES & H. BELL. E MACHINE FOR FORMING ENLARGED 0R EXTENDED HEADSUPON NAILS AND THE LIKE I APPLIOATIQN EILED JULY 10, 1 908. 955,635. Paented Apr 19, 1910.

B 8HEETSSHEET 4.

WITNESSES.

J. B. DAVIES &. H. BELL. MAGHINE FOR FORMING ENLARGED 0B EXTENDED HEADSUPON NAILS AND THE LIKE.

APPLICATION FILED JULY 10, 1908. 4

Patented Apr.19,191().

6 SHEETS-SHEET 5.

N X w 'I/r' ATTORNEYS."

J B. DAVIES & H. BELL. MACHINE FOR FORMING ENLARGED 0R EXTENDED HEADSUPON NAILS AND THE LIKE. APPLIOAIIONI FILED JULY 10, 1908. 955,635,Patented Apr. 19, 1910.

III/ igwam) 115 ATTORNEYS, v

WITNESSES 4 1 UN 1TB STATES arn'r OFFICE.

JOSEPH BARTLETT DAVIES, OF MELBOURNE, VICTORIA, AND HALE-COURT BELL, OFSOUTH MELBOURNE, VICTORIA, AU$TRALIA.

MACHINE FOR FORMING ENLARGEI) OR EXTENDED HEADS UPON NAILS AND THE LIKE.

To all whom it may concern:

Be it known that we, JOSEPH BARTLETT Davies and ITARCOURT BELL, subjectsof the King of Great Britain, residing at No. 380 Flinders Lane,Melbourne, accountant, and No. 12 St-urt street, South Melbourne,engineer, respectively, in the State of Victoria, Commonwealth ofAustralia, have invented certain new and useful Improvements in Machinesfor Forming Enlarged or Extended Heads upon Nails and the Like, of whichthe following is a specification.

This invention relates to certain improvements in a machine for formingenlarged or extended heads upon nails and the like in which suchenlargement or extension consists of a separate disk or washer.

This invention refers more particularly to a machine for the manufactureof nails having dome or inverted cup-shaped heads of sheet metal for usewith corrugated iron, for which Letters Patent were applied for in U. S.A. No. 391%76/07.

Though this invention is hereinafter described as relating moreespecially to a machine for forming the enlarged or extended heads uponnails of the kind mentioned it will be well understood that it isequally applicable to the formation of enlarged or extended heads uponother cognate articles such as screws etc. and in this specification theterm nails will be held to include all such. Furthermore the term diskswill be held to include washers and the like from which such enlarged orextended heads might be formed.

The object of our invention is to provide certain improvements in theaforesaid machine in which the operation of affixing the disk to thenail is mechanically effected thereby producing a nail with an enlargedor extended head in a state fit for galvanizing.

The improvements in the aforesaid machine are as hereinafter describedand shown in the accompanying drawings in which a complete machine isillustrated adapted to deliver 5 nails with enlarged heads at eachoperation.

In order that our invention may be the better understood we will nowproceed to Specification of Letters Patent.

Application filed July 10, 1908.

Patented Apr. 19, 1910. Serial No. 442,991.

describe the same by reference to the accompanying drawings, in whichFigure 1 comprises two separate views of the nail which this machine ashereinafter described is designed to manufacture it beinghoweverunderstood that our invention is not confined entirely to themanufacture of these particular nails. Fig. 2 is a side elevation of ourimproved machine complete taken from the right hand side. Fig. 3 is asimilar side elevation taken in section through the center of themachine. Fig. 4. is a front view of the machine shown partly in section.Fig. .5 is a plan of the machine with the nail feeding mechanism removedshowing the disk magazine, feeding mechanism, die cylinder and pressureplungers. Fig. 6 is a detail view in plan of the mechanism forassembling and delivering the nails one at a time as discharged from thenail magazine. Figs. 7 and 8 are detail views in plan of the disk racesand feeding mechanism. Fig. 9 is a detail enlarged view in section ofthe disk feeding mechanism. Fig. 10 is a similar detail view of a dieand pressure plunger. Fig. 11 is a side elevation of a portion of theleft hand side of the machine showing the operation of the tripping andcut-01f gear. Fig. 12 is a horizontal section of the reciprocating beamcarrying the pressure plungers showing the pump mechanism formaintaining the pressure. Fig. 13 is a longitudinal enlarged section ofthe said beam taken upon the line mw of Fig. 12. Fig. let is a crosssection also enlarged of the said beam taken upon the line of the pump.Fig. 15 shows detail views of the cutting off mechanism.

Referring to Fig. 1 A represents a nail and B a disk which forms uponthe said nail an enlarged or extended head. The nails A are preferablyordinary wire nails having wings upon the underface of the head whilethe disks B are made preferably from tin plate being stamped out in sucha way that a number of burs are formed upon the upper face while thedisk itself is preferably slightly domed or dished inversely to assistin the operation of feeding as hereinafter described. As these nails Aare forced home the said burs engage with small projecting wings uponthe under face of the nail head the securing of the disks beingcompletely effected by the subsequent dipping in molten zinc orgalvanizing. This machine will be herein described as relating to themanufacture of these nails as shown in Fig. 1 but it may be modified sothat it may be adapted for the formation of enlarged or extended headsof other disks upon other nails.

1 is the main framework of the machine which is constructed of two slideframes, one erected upon each side with cross beams and stay rodscomprising together a rectangular frame. 1V ithin this framework ismounted a cross shaft 2 carrying a fast pulley 3 and a loose pulley land a fly wheel 5. Up the other end of the shaft 2, on the right handside of the machine, and upon the outside of the framework, is a spurpinion 6 which gears with a spur wheel 7 upon the main shaft 8. Thismain shaft 8 is mounted in suitable bearings in the framework 1, andextends across the machine from side to side. Upon the other end of themain shaft 8, that is to say upon the left hand side of the machine, isprovided an ec centric 9 having an antifriction roller 10 engaging aslot 11 in a downwardly projecting arm 12. This arm 12 is secured toanother cross shaft 13, which also extends across the machine from sideto side working in suit able bearings within the framework 1 and isactuated with a reciprocating or rocking motion by means of theeccentric 9 and arm 12. The rocking shaft 13 carries at each end aforwardly projecting arm 1 1 connected to vertical rods 15, attached attheir upper ends to a cross beam 16 working in vertical guides 17 oneupon each side of the framework 1.

The mechanism for assembling the nails and delivering them one at a timeis as follows :At the top of the framework 1 is a magazine 18 of knownconstruction having in its floor or bottom a series of slots or channels19. This magazine 18 is hinged at its forward lower edge and isconnected by rods 20 to cranks 21 mounted upon each end of a rotatingshaft 22. The magazine 18 is thus actuated with a vertical swingingmotion by which the nails therein are separated and causedto fall intothe said slots or channels 19 suspended from their heads as shown inFig. 3. The connecting rods 20 are made telescopic to obviate the dangerof an operator being caught thereunder. The rotating cross shaft 22 isoperated from the driving shaft 2 by a series of spur wheels andpinions. The shaft 22 carries a toothed wheel 23 gearing with a spurwheel 24: mounted upon a cross shaft 25 which carries a toothed wheel 52driven by a spur pinion upon the shaft 2 preferably formed by a seriesof teeth being out upon the surface thereof. The magazine 18 is providedwith a series of inclined races 26 extending forward from its lower edgeand corresponding with the slots or channels 19. At each upward motionof the magazine 18 the nails hanging in the slots or channels 19 aredelivered by gravity into the inclined races 26 down which they pass asshown in Fig. 3. At the lower end of each of these races 26 suitablemechanism is provided for separating out the nails and delivering themone at a time, which is shown more particularly in detail in Fig. 6. Forthis purpose each race 26 is provided with two fingers 27 and 28, aforward and upper finger 27 and a rearward and lower finger 28 passingthrough the bars forming the races 26. The fingers 27 and 28 are mountedupon upwardly projecting brackets 29 upon a reciprocating shaft 30. Thelower rearward fingers 28 project from the left hand side of thebrackets 29 and are pointed at their ends to enable them to readily passbetween the shanks of the nails. These fingers 28 bear against springs31 upon the side of the brackets 29 whereby they are permitted to giveshould they at any time engage an uneven shank or other obstruction. Theupper forward {in gers 27 working upon the faces of the races 26 aremounted upon the right hand side of the brackets 29. As the shaft 30reciprocates the fingers 27 and 28 alternately cross the races 26 andsubject the nails to intermittent rests cutting them off one at a timeand delivering them in regular consecutive order as required. The shaft30 is given its reciprocating motion from a vertical sliding plate 32 ofvariable width which engages a slot in the said shaft 30, and isconnected at its lower end to the beam 16 before described and worksagainst a spring 33. At the bottom of the nail races 26 is provided a.series of gates 34: (one for each race) mounted upon a furtherreciprocating shaft 35. These gates 34: are adapted in their movement tofeed the nails one at a time from the bottom of each race 26 and forthis purpose each race 26 is turned at the bottom (as shown in Fig. inthe direction of the delivering movement of the gates 3 1. Thereciprocating shaft 35 receives its cross motion from, a verticalsliding plate 36 engaging a slot within the same and operated with avertical movement as hereinafter described. The gates 3% mounted uponthe reciprocating shaft 35 work upon a sta tionary face plate 37 securedto the framework 1 and are formed with inclined recesses 38 so arrangedthat when in the right hand position the nails are held in the turnedportions of the races 26 but when they (the gates 3%) move to the lefthand position the nails are released and fall downward through therecesses 38 into tubes 40. These tubes 40 are held upon the face plate37 by spring clips 39 (Fig. 4) so that they may be easily removed andreplaced at any time should they be choked with nails. These tubes '40discharge into inclined recesses 41 formed in covers 42 held upon astationary cross beam 43. )Vithin this cross beam 43 are a series ofvertical channels 45 within which work plungers 46 attached to thereciprocating cross beam 16 by thiunb screws 47 while at the bottom ofeach channel 45 is a pair of jaws 48 having springs 49. The recesses 41are arranged at the side of the channels 45 and the nails pass therefrominto the said channels 45 as the plungers 46 rise and are then driventhrough the jaws 48 as the said plungers 46 descend. These covers 42 aresecured to the cross beam 43 by locking bars 50 having notches at eachend engaging headed projecting pins 51 and held in place by thumb screws44. Thus by releasing the thumb screws 44 half a turn the covers 42 maybe removed. The sliding plate 36 operating the gate 34 is given avertical movement by being attached at its lower end to a lever 54 (Fig.pivoted at to the framework and engaging a cam 56 at its other end uponthe main shaft 8 (as shown in dotted lines in Fig. 2).

The mechanism for assembling and feeding the disks one at a timeconsists of a disk magazine 57, which is constructed as shown moreparticularly in Fig. 5. This disk magazine 57 rests upon an adjustingscrew 58 at the back, by which its elevation may be regulated and isprovided with an inclined floor or bottom at the rear having a series ofplates 59 which divide the said floor or bottom into a number ofchannels 60 corresponding with the number of nail races previouslydescribed. Each of these channels 60 connects with a disk race 61. Thefront of the disk magazine 57 is formed by a curved plate 62 thelowermost edge of which is formed with a series of vents 63corresponding with the races 61, and so shaped that the disks can onlypass through in one way when lying with the burs projecting upward, andeach vent 63 is made of such a size to conveniently accommodate the bur.The magazine 57 is provided with revolving brushes 64 mounted upon across shaft 65 and moving in the direction as shown by the arrow. Thiscross shaft 65 with the brushes 64 is driven by a sprocket wheel 66actuated by a chain 67. This chain 67 gears with a toothed sprocket 68mountcd upon the shaft 25 and passes around an idler 69 so that rotarymotion is imparted to the brushes 64 from the said shaft 25 which isdriven as previously described. The revolving brushes 64 continuallyagitate the disks and by removing those which do not assemble in theproper position with burs upward to pass through the vents 63 into theraces 61 maintain the feed of the said disks. The disks on entering theraces 61 through the vents 63 pass downward by gravity and for thispurpose the races 61 are formed upon the upper face of a plate 70. Theseraces 61 are formed with an open slot upon the upper side through whichthe burs project (as shown in Fig 7) and the disks slide downwardtherein by gravity each one overlapping that in niediately below it withits lower edge bearing against the bur of the other as shown in Fig. 9.The plate 70 within which are the races 61 extends downward from themagazine 57 at an incline being curved at the bottom to a horizontalposition (Fig. 9). The races 61 are provided with an escapement deviceby which the disks are fed forward one at a time consisting of a seriesof spring fingers 71 (one for each race) mounted on a cross bar 72arranged over the face of the plate 70 and bearing on the top of thedisks in conjunction with a series of pins 73 (one for each race)attached to a cross bar 74 arranged underneath the plate 70 andprojecting up through the said races 61. The spring fingers 71 andupwardly projecting pins 73 are adapted to alternately obstruct thepassage of the disks in the races 61 and for this purpose are bothconnected to a shaft (5 mounted underneath the plate 7 O to which isattached an arm 7 6 operated by a cam 77 on the rocking shaft 13 thereturn movement being efiected by a spring 78. The races 61 in the plate70 are further provided with mechanism for feeding the disks forwardconsisting of a series of pawl or fingers 79 (one for each race) adaptedto move up and down within the open slot of the races 61 and thus carrythe disk released by the pins 73 downward around the curve of the plate70. These pawls or fingers 79 are made with projecting points 80 whichengage the open slots of the races 61 and with guides 81 which bear uponthe side of the said slots. These pawls or fingers 79 are mounted upon across bar 82 and reciprocating motion is imparted by the said cross bar82 being carried by arms 83 at each end attached to a cross shaft 84having a rearwardly extending arm 85 which is connected by another arm86 to the lever 14 which is mounted on the rocking shaft 13 and actuatesthe cross beam 16. Each race 61 is further provided with a feed rod 87by which the disks are carried forward to the end of the same to aportion immediately over the dies. These feed rods 87 are arrangedhorizontally and project in through the bottom of the races 61 andobtain their reciprocating motion by being attached to a cross bar 88supported upon levers 89 pivoted on the framework at 90 and operated bythe end of one of the levers 89 engaging a cam 91 upon the cross shaft25 before described the return movement being obtained by a spring 92.Each race 61 is formed at its lower or outermost end with a spring 3upon each side which bear upon the disks and hold them in positionimmediately over the dies.

The dies 9% upon which the extended heads of the nails are shaped areformed upon an intermittently rotating cylinder 95 and each series orrow of dies corresponds with the number of nail. and disk races of whichfive are shown in the drawings. The dies 9% are mounted in horizontalrows or series upon the face of the cylinder and in the accompanyingdrawings eight of such rows or series are shown. Each die 9 1 isprovided with an internal hole 96 corresponding with the shank of thenail and is held in place by a bush 97 so that they may be at any timeremoved. or adjusted if re quired. Each die 9% is of a shapecorresponding with that of the finished nail head. The cylinder 95 isprovided with an internal core 98 and also with a number of holes 99corresponding with the central holes 96 of the dies 94, and these holes99 pass rightthrough to the internal core 98. Intermittent rotatingmotion is imparted to the cylinder 95 by means of a star wheel 100 having alternate rectangular recesses 101 and curved recesses 102 one eachcorresponding for each row or series of dies 94:. This star wheel 100 isactuated by pin 103 and roller 104lmounted eccentrically upon a disk 105upon the main shaft 8 moving in the direction as shown by the arrows inFig. The roller 10% upon the pin 10?; engages one rectangular recess 101in each revolution of the shaft S. and thereby in each revolution movesit forward one-eighth of a revolution. Alternatcly the curved recesses102 bear upon the shaft 8 and the cylinder 95 is thereby held at rest inthe proper position until it receives its next forward movement by theeccentric roller 10 engaging the next rectangular recess 101. A notch104: in the shaft 8 permits the passage of the corners of the starovhcelwhen the star-wheel is rorated.

A cross bean'i 106 is provided upon the front of the machine working insuitable slides 10? upon each side actuated with a bad-(ward and forwardreciprocating motion by means of pitm n 108 connected at their innerends to eccentric cams upon each end of the main shaft 8. The cross beam106 is provided with a series of pressure plunger-s 109 having dies 110let into the ends thereof, and recessed to a shape corresponding withthe dies 9-1; and the head of the nail as subsequently formed, exceptthat the part of the die 110 which engages the center of the nail headis recessed, as at 111, so that the pressure is applied immediately overthe shank of the nail and not upon the edges of the head in order tomore securely clench the disk upon the nail to form the enlarged orextended head. Each pressure plunger 109 is constructed with packings112 and works within a recess 118, having a bush 114i in the rear faceof the beam 106 so that they may be adjusted when required. Each of therecesses 113 connects with a cross channel 115 by which oil or otherliquid under pressure may be supplied to the back of the said pressureplungers 109 and thereby maintain the same all under one constantpressure and causing the same constant pressure to be imparted to allthe dies. For this purpose the channel 115 is connected by means of afurther channel 110 to a pipe 117 having a stop cock 118 leading to anaccumulator or head of liquid by which a constantpressure may bemaintained. The pressure of oil or other liquid is also maintained uponthe pressure plungers 109 by means of a pump operated by the motion ofthe machine, and for this purpose the beam 100 is provided with a recess119 upon one side which engages a fixed piston 120, or a separate pumpmay be provided to maintain the pressure of oil in the accumulator. Thispiston 120 is attached to one of the bolts 121 upon the framework andthe rear end of the said recess 119 is provided with two valves 122 and123mspectively connecting with a channel 124:. This channel 12%:connects by means of another channel 125 to a reservoir 126 arrangedupon the top of the beam 106 having a perforated plate 127 at the bottomthereof for straining the oil or other liquid. The channel. 12 1vleading from the piston recess 119 connects through the medium of thevalve 122 to a channel 128 which connects in its turn with one of theplunger recesses 113 and thereby with all the recesses 113 of thepressure plungers 109. The channel 125 is also provided with a. stopcock 129 by which the supply of oil or other liquid may be cut off fromthe operation of the pump piston 120 when the pressure is maintained.The beam 100 is further provided with an escape valve 130 arranged inthe recess 131 for relieving any undue pressure which may be obtainedwhile in operation.

Within the internal core 98 of the cylinder 95 is a verticallyreciprocating beam 135 by which the nails are discharged after theenlarged or extended heads are formed thereon. This reciprocating beam1.35 is provided with a series of downwardly projecting rods 136corresponding with the central holes or recesses in the dies 94. Thereciprocating beam 135 is connected at each end to a sliding bar 137mounted upon the main framework upon either side of the machine. Thesesliding bars 137 are operated from the main shaft 8 by means of a cam138 having a slot 139 concentrically shaped for the major portion of itspath,v

and the rest so shaped as to impart a periodic movement to the arm 140having a roller which gears therewith. This farm 140 is mounted upon across shaft 142 which passes across the machine from side to side, andis provided at each end with a forwardly extending arm 143. These arms143 are connected to the sliding bars 137 upon each side whereby anintermittent vertical reciprocation is imparted to the said cross beam135.

At the bottom of the machine is provided a classifying trough or sieve144 by which any nails without disks or disks without nails orimperfectly formed nails are sepa rated out. The bottom of thisclassifier consists of a series of inverted V-shaped plates 145 havingchannels 146 between of such a width that any nails without disks or.disks by themselves may pass therethrough but the nails with theenlarged or extended heads are retained and caused to pass downward, andare discharged into a receptacle for the purpose. This separating sieve144 is adapted to reciprocate and for this purpose is supported at itsforward end by arms 147' hinged to the framework 1 and at the rear byarms 148 attached to an eccentric 149 mounted upon the cross shaft 2.

Means are also provided for cutting off the feed of the nailsindependently or of both the nails and disks at the same time. For thispurpose the cross shaft 30 before described in connection with the nailfeeding mechanism is provided on its outer end with an inclined face 150which is engaged by a tripping lever 151 mounted upon a spindle 1532upon the framework 1 of the machine (Fig. 15). For the purpose ofcutting off the feed of disks a disk 153 is mounted on the inner end ofthe spindle 152 to which is eccentrically attached a downwardlyextending rod 154 seated at its lower end within a socket upon aforwardly extended arm 155 which is mounted upon the shaft 75 to whichthe spring fingers 71 are connected. The rod 154 is so positioned in itseccentric attachment to the disk 153 that by a turn of ninety degrees ofthe tripping lever 151 the arm 155 is not depressed while the said lever151 engages the inclined face 150 of the shaft 30 and forces the sameback against the pressure of the spring 33 thus locking the fingers 28across the channels 26 and thereby cutting off the feed of nails. Byturning the tripping lever 151 a full half turn or about one hundred andeighty degrees the rod 154 depresses the forwardly extending arm 155 andlocks the spring fingers 71 in their downward position within the races61 and thereby also cuts off the feed of disks. Means are also providedin addition for throwing the machine out of gear when any irregularlyformed nail or a nail assuming an incorrect position or otherobstruction is met with as the nails are fed forward beneath theoperation of the plungers 46. These plungers 46 are as before describedheld upon the reciprocating beam 16 by means of thumb screws 47 so thatshould they meet with any undue resistance the beam 16 will descendwithout them, leaving the said plungers 46 in an elevated position. Forthe purpose of throwing the machine out of gear upon this contingencythe beam 16 is provided with a series of trippers 156 mounted upon across shaft 157 supported in brackets 158 attached to the said beam 16.The point of each of these trippers 156 bears upon the upper end oftheir corresponding plungers 46 (as shown in Fig. 3), and springs 159are provided upon their under face to hold them in position. A trippinglever 160 is also provided pivoted upon a bracket 161 attached to thebeam 43 having its inner point so ar ranged that the trippers 156 justmiss the same when in their normal position. When however any one of thetrippers 156 is elevated by a plunger 46 it engages the point of thelever 160 and depresses the same. This lever 160 engages a pin 162 uponthe belt fork lever 163. This belt fork lever 163 is pivoted to abracket 164 on the framework 1 and is provided at its lower end withprongs 165 which engage the driving belt 175 working on the pulleys 3and 4. The belt fork lever 163 is pressed outward by means of a spring166 upon a rod 167 connected to the same and extending across themachine and having .a handle 168 at its outer end. l/Vhen the belt forklever 163 is thus released by the tripping lever 160 disengaging the pin162 the driving belt 175 is moved across from the fast pulley 3 to theloose pulley 4 and the machine is thereby stopped. To assist in thestoppage of the machine, the belt-fork lever 163 has rigidly securedthereto the trigger 176 having an adjusting screw 171 and an upwardlydisposed lower shoulder 171 between which is received the projecting endof a brake block 172 pivoted at its inner end to the bracket 164 andadapted to bear upon the fast pulley 3 when the said belt fork lever 163is released. The pivot spindle of the tripping lever 160 in the bracket161 is also connected to a lever upon the front of .the ma chine havinga handle. Thus at any time should any contingency occur the machine maybe thrown out of operation by moving this lever releasing the belt forklever 163,

In describing the operation of the machine we will follow one nail raceand its corresponding disk race and die and plungers. The nails A moveby gravity down a race 26 from the magazine 18 and are then held at thebottom of the said race 26 first by the finger 27 assuming that the beam16 is in its lowermost position. As the beam ascends the fingers 27 and28 as operated by the sliding plate 32 reverse their position withregard to the race 26 and the finger 28 passes between the two lastnails holding the rest back while the last nail falls down against thegate 3 1. As the beam 16 descends the fingers i7 and 28 again reversetheir position while the gate 84: moves across to the left as operatedby the sliding plate 36 allowing the nail to pass through the inclinedrecess 38 into the tube 40 point foremost. The nail passes down the tube40 into the recess 4-1 where it lies against the plunger 416. As theplunger 16 rises the nail falls into the channel 45. The mechanism is soarranged that one nail is delivered into each channel 45 for everyrevolution of the main shaft 8. At the same time the disks B are passingdown from the magazine 57 through the race 61 where they are alternatelyheld by the spring fingers 71 and the upwardly projecting pins 73. WVitheach revolution of the main shaft 8 a disk is fed forward first by thepawl or finger 79 and then by the feed rod 87 into the end of the race61 where it is held by a spring 93, upon each side, immediately underthe channel 15 within which is the nail A. As the die 94: upon thecylinder 95 comes into position immediately underneath the disk B in theend of the race 61 and the nail A in the channel 15 it is heldstationary by the semicircular recess 102 bearing on the main shaft 8.The plunger as then descends forcing the nail through the aws 4:8 andthrough the central hole of the disk B and into the die 94. The die 94then moves around into the horizontal position on the cylinder 95 andwhile again be ing held stationary by the semicircular recess 102 of thestar wheel 100 bearing on the main shaft 8 the pressure plunger 109 onthe sliding beam 106 exerts pressure on the head of the nail securelyclamping the disk to the same. The die cylinder 9d continues to rotateintermittently one-eighth of a revolution at each operation and when thedie 9a is in the inverted vertical position the sliding beam 135 androds 136 discharge the completed nails therefrom on to the classifyingtrough or sieve l ke where those imperfectly formed are separated out.

We claim 1. In a machine for forming enlarged or extended heads uponnails and the like the combination with a series of races adapted tofeed the nails of a series of reciprocating gates, one for each race,having inclined channels adapted to alternately correspond with thebottom of the said races leading to the tubes through which the nailspass and moving upon a face plate substantially as described.

2. In a machine for forming enlarged or extended heads upon nails andthe like the combination with a series of races adapted to feed thenails of a series of reciprocating gates, one for each race, havinginclined channels adapted to alternately correspond with the bottom ofthe said races leading to the tubes through which the nails pass andmoving upon a face plate the said races be ing turned at the bottom inthe direction of the reciprocating movement of the said gatessubstantially as described.

3. In a machine for forming enlarged or extended heads upon nails andthe like the combination with covers over the spring jaws through whichthe plunger-s force the nails of means for locking the same in placeconsisting of a pivoted locking bar having notches at each end engagingprojecting headed pins with a wing nut in the center on the pivot screwso that tension may be applied thereto substantially as described.

4. In a machine for forming enlarged or extended heads upon nails andthe like the combination with a disk magazine having a series ofinclined races leading therefrom of an escapement device arranged onefor each race consisting of a spring finger bearing upon the top of therace and a pin projecting upward through a hole in the bottom of therace both the spring fingers and the upwardly projecting pin beingattached to a rocking shaft so that they alternately obstruct thepassage of the disks substantially as described.

5. In a machine for forming enlarged or extended heads upon nails andthe like the combination with a series of races leading from the diskmagazine and curved at the bottom from an inclined to a horizontalposition of a series of pawls or fingers, one for each race, adapted tomove up and down within the open slots of the said races and feed thedisks around the said curves of the said races substantially asdescribed.

6. In a machine for forming enlarged or extended heads upon nails andthe like the combination of a series of races leading from a diskmagazine, an escapement device consisting of a series of spring fingersbearing upon the top of the said races and a series of pins projectingup through the bottom of the said races alternately obstructing thepassage of the disks, a series of swinging pawls or fingers adapted tocarry the disks around the curve in the said races, a series ofreciprocating rods adapted to feed the disks for ward into position anda series of springs at the end of the said races to prevent the disksbeing fed past the point Where the nails are driven therethi'oughsubstantially as de scribed.

7. In a machine for forming enlarged heads on nails, the combination ofa series of inclined races, a stationary face plate provided Withinclined recesses, a gateshaft provided with gates adapted to registeralternately With said races and said inclined recesses respectively,means. for reciprocating said gate-shaft longitudinally of said Intestimony whereof We have hereunto set our hands in presence of twosubscribing witnesses.

JOSEPH BARTLETT DAVIES. HARCOURT BELL.

l/Vitnesses CLEM. A. HACK, E. L. ROSMAN.

